package com.itcam.kuangstudy.reflection_;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;

/**
 * Author:Cammy.Wu
 * Date:2024-05-13
 * Description:
 */

// 获得类的信息
public class ReflectionDemo07 {
    public static void main(String[] args) throws ClassNotFoundException, NoSuchFieldException, NoSuchMethodException {
        Class c1 = Class.forName("com.itcam.kuangstudy.reflection_.User");

        // 获得类的名字
        System.out.println(c1.getName());   // 获得包名 + 类名
        System.out.println(c1.getSimpleName());  // 获得类名

        // 获得类的属性
        System.out.println("================================");
        Field[] fields = c1.getFields();  // 只能找到public属性

        fields = c1.getDeclaredFields(); // 找到全部的属性
        for (Field field : fields) {
            System.out.println(field);
        }

        // 获得指定属性的值
        Field name = c1.getDeclaredField("name");
        System.out.println(name);

        // 获得类的方法
        System.out.println("==================================");
        Method[] methods = c1.getMethods(); // 获得本类及其父类的全部public方法
        for (Method method : methods) {
            System.out.println("正常的:" + method);
        }
        methods = c1.getDeclaredMethods(); // 获得本类的所有方法
        for (Method method : methods) {
            System.out.println("getDeclaredMethods:" + method);
        }

        // 获得指定方法
        Method getName = c1.getMethod("getName", null);
        Method setName = c1.getMethod("setName", String.class);
        System.out.println("getName = " + getName);
        System.out.println("setName = " + setName);

        // 获得指定的构造器
        System.out.println("==================================");
        Constructor[] constructors = c1.getConstructors();
        for (Constructor constructor : constructors) {
            System.out.println("constructor = " + constructor);
        }
        constructors = c1.getDeclaredConstructors();
        for (Constructor constructor : constructors) {
            System.out.println("# = " + constructor);
        }

        // 获得指定的构造器
        Constructor declaredConstructor = c1.getDeclaredConstructor(int.class, String.class, int.class);
        System.out.println("指定：" + declaredConstructor);
    }
}
